Printing telegraph apparatus



Nov. 4, 1941. R. E. zl-:NNr-:R

PRINTING TELEGRAPH APPARATUS Filed Oct. 25, 1959 Patented Nov. 4, 194i PBINTIN G TELEGBAPH APPARATUS Raymond E. Zenner, Brookfield, Ill., assilnor to Teletype Corporation, Chicago. Ill., a corporation of Delaware Application October 23, 1939, Serial No. 300,692

17 Claims.

'I'he present invention pertains to printing telegraph apparatus and more particularly to such apparatus capable of tabulation recording.

In printing telegraph systems employing recording apparatus provided with tabulating mechanism, time is necessarily required to move the type carriage or platen carriage, as the case may be, from one position to another during tabulation. In manual operation of key-controlled recording apparatus, cognizance is taken of the tabulating time by the operator, who, during such time, refrains from further operation of the keyboard. However, in automatic operation of such recording apparatus, by means of tape transmitters wherein the apparatus is unattended for extended periods of. time, it is desirable to simulate manual control during tabulation so as to suspend transmission automatically during the time that the carriage is in motion while tabulating, thus preventing the improper operation of the recording apparatus.

The primary object of the present invention is to provide a transmitting means for automatically controlling telegraphically the recordation of infomation containing tabular operations.

Another object of the invention is to provide in a telegraph transmitter utilizing a signal control strip, a timing device controlled by said strip in accordance with a predetermined signaling condition.

A feature of the invention resides in associating a permutation code device with the tape sensing levers of a tape transmitting distributor, which device controls a screw and follower timing device which, in turn, controls a contact in the circuit of the start magnet of said distributor.

The present invention provides for the operative association of a tape transmitter with a receiving printer equipped with a tablilating'mechanism, whereby the receiving printer in preparing -tabulated matter is made to respond to the operation of a transmitter which automatically takes cognizance of tabulating time in accordance with the perforations in the tape. Such an arrangement produces a printed copy containing tabular matter corresponding to the perforations in the tape.

Specifically, when a perforated record is made which involves tabulated portions, it is expedient to compensate for the tabulation time required at the recorder by suspending transmission during tabulation. As in the type of tabulating recorder disclosed in U. S. Patent 2,076,864, a tabulator bar extends across the front of the machine. is carried by brackets mounted in the typing unit, and is capable of swinging toward and away from the type carriage. 'I'he tabulator bar carries a number 'of adjustable tabulation stop members which determine the positions t0 which the type carriage is automatically propelled (a distance equivalent to a plurality of character spaces) following the reception of a tabulator code signal combination.

In the tape transmitter according to the present invention for suspending transmission during tabulation time intervals, the series of tape sensing levers have associatedtherewith a corresponding series of permutation code bars which, in accordance with the permuted arrangement thereof, effects the selection of any one of three selectable vbars in response to the letters (lower case),

bars, which are coded, for the present purpose. to

permit the selection of the three selectable bars, identified with the letters," -gures, and tabulator code signals.

In response to a letters, iigures or tabulator signal, one of these bars will be selected, whereupon an operating bail will engage a shoulder on the selected bar Iand impart movement thereto. 'I'he three selectable bars control the follower arm of a screw and follower timing device which, in turn, controls a contact included in the circuit of the start magnet of the transmitting distributor. When the tabulator signal is received, the permutation code bars are set correspondingly and the selectable bar allotted to the tabulator code signal is selected and operated to lift the follower arm away from the worm or screw. This permits the follower arm to be moved by spring tension away from the contact (which is in the transmitting distributor start magnet circuit) so that this contact opens, releasing a start magnet of the transmitting distributor and stopping transmission upon completion of the tabulator signal. At the close of the signal cycle, the follower arm is permitted to engage the continuously rotating worm which then feeds the follower back against the tension of its spring. to close said contact. thereby causing transmission to be resumed. The length of l the interruption'is determined by the length, pitch and/or speed of the worm, and may be made adjustable by providing an adjustable stop to control the distance through which the follower is moved away from the contact by its spring.

A better understanding of the present invention may be had from the following description taken in conjunction with the accompanying drawing wherein like reference characters are used to dasignate similar parts throughout the several views. and wherein.

Fig. 1 is a schematic diagram oi' the arrangement according to the present invention;

Fig. 2 is a transverse cross-sectional view of the tape transmitter according to the present invention;

Fig. 3 is a sectional view taken substantially on line3-3ofFig.2; y

Fig. 5 is a sectional View taken on line I-li of Fig. 3;

Flg.6 is an enlarged sectional view taken on line 6 6 oi' Fig. 3; and

Fig. 7 is a view taken on line 1--1 of Fig. 6'.

Fig. 8 is a modification of a portion of the invention.

In Fig. 1 there is shown at I5 the front elevational view of the principal part of a receiving printer of the type disclosed in U. S. Patent 1,904,164, showing the application thereto of the tabulating mechanism of the type shown in U. S. Patent 2,076,864, -supplemented witha schematic circuit diagram showing a tape transmitter and a plurality of receivers in the same line circuit.

The tape transmitter II is shown diagrammatically as connected in a signal line I 0, in which are also connected line magnets I2, I3, and Il of receiving printers I 5, I6, and I1. Although only the printer Il will be described. it is understood, of course, that the printers I6 and I1 are of identical construction. The tape transmitter, indicated generally as II in Fig. 1, comprises a series of tape controlled contacts I3 (a ilve-unit code transmitter being shown in the present embodiment) and a. commutator distributor I9.

As indicated by the wiring diagram in Fig. 1, the ve tongues on the tape transmitter II move between upper-and lower contacts I8. called the spacing" and marking contacts, respectively. T'he perforations in the tape determine which contact tongues will be on spacing contacts and which on the marking contacts. As the brush arm 2I of the commutator distributor I3 revolves, it will successively connect through the brush carried thereby the ve segments to the line. each in turn sending out a marking or spacing impulse, depending upon the permutative setting of the contacts I2 in accordance with the periorations in the tape. The revolution of brush arm 2I is controlled by a stop magnet 22, the armature 23 of which co-operates with the extremity of brush arm 2|. In the energizing circuit for magnet 22 is a battery 2| and a contact 2l. The operation of contact 25 is controlled by the screw and follower timing device shown in Fig. 5 in a manner to be described. When the stop magnet 22 is de-energized upon the opening of contact 25, the armature 23 will be spring biased to a position to arrest the brush arm 2 I. On the other hand, when the contacts 2l are closed, magnet 22 will be energized and armature 23 will be attracted, thus freeing the brush arm 2I for rotation. As is well-known. when the armature 23 is released it arrests the contact brush arm 2l on the stop segment of the distributor Il. The signals thus generated at the transmitter. are transmitted over the signal line III to the receiving stations, whereat these signals operate the receiving magnets I2, I3, and Il to control the operation of their respective selector mechanisms.

y Brieily,.the printing apparatus, to which the tabulating mechanism (with which the present invention is concerned) is applied, comprises a typing unit (shown generally as I5) which includes a primary selecting mechanism. indicated generally by the receiving electromagnet I2. which is of the typ disclosed in U. S; Patent 1,745,633 (and also fully disclosed in Patent 1,904,164), and a secondary selector or selector vane assembly, indicated generally as 23. The selector vane assembly 23 controls, through a series of bell crank levers 21, a corresponding series of curved code bars 28 carried in a movable type carriage. indicated generally as 29. "As set forth in Patent 1,964,164, this type carriage 23 is movable longitudinally with respect to a stationary platen' (not shown). During normal printing operations, the carriage 2| is movable rightwardly (as viewed in Fig. 1) along rails 3l in a stepby-step manner indicative of character spacing. As disclosed in U. B. Patent 2,076,864, continuous spacing may be effected upon receipt of a code signal identified as the tabulating code signal which functions to initiate the operation of the tabulating mechanism.

The mechanically operated tabulating ar rangement, according to the present embodiment of the invention. comprises a tabulator bar 32 extending across and in front of the typing unit II. Bar 32 is provided with depending portions 33 and 3l through which it is pivotally mounted on Abracket 3l carried on the printer frame. Thus, tabulator bar 32 is adapted to be swingable toward and away from the carriage 23. Bar 32 is provided with a longitudinal slot 36 extending substantially the entire f length of the bar. In this slot are carried a plurality of adjustably p0- sitionable tabulation stop members 31. which are adapted to be clamped to the bar 32. Stop meml bers 31 are each provided with yinclined or cam portions conformed to cofoperate with a cam striker 3B carried by the type carriage 23 to terminate the tabulating operation. The tabulator bar 32 is also provided with a depending arm 3l adopted to co-operate in latching manner with the front end of a tabulator control lever I I controlled by the tabulator function lever I2. as de scribed in Patent No. 2,076,864. Thus. when the tabulator function lever 42 is selected for operation upon the proper setting of selector vanes 2|', it is drawn toward the vane 23 by its spring, and in so doing it acts to'rotate lever 4I to lower its front end into latching engagement with arm 33, thus permitting spring I3 to pull tabulator bar 32 toward the printer I5 (away from the observer, as viewed in Fig. i). This action presents tabulation stops 31 into the path of Stroker 33. The rear end of lever 4I raises and thus lifts the rear space pawl from the spacing ratchet (not shown), thereby freeing said ratchet for continuous rotation to effect corresponding rotation oi the spacing worm (not shown), thus causing the type carriage 29 to move quickly and smoothly toward the right until the striker 3l cams the first tabulation stop 31, that it encounters in its path, outwardly (or toward the observer) thereby rocking tabulatorbar 92 to eil'ect the disengagement of lever 4I from arm 39, which action restores the rear spacing pawl into engagement with the spacing ratchet to terminate the spacing operation and arrest the movement of the type carriage 29.

Now, during the tabulation operation just described, transmission of signals from the transmitter Il must be stopped and remain so during the tabulation time interval. To achieve this result, the transmitter II is provided with a tape controlled timing arrangement which suppresses transmission for a period of time to assure the completion of the longest tabulationV time interval,

'I'he tape transmitter II (Figs. 2, 3 and 4) comprises a base portion 44 on which is supported a tape sensing means or record reader indicated generally as 45, a commutator distributor indicated generally as I9, and a motor 46. The record reader 45 comprises a bracket 41. Pivotally carried on a shaft 48 mounted in said bracket is a series of tape sensing levers 49. Levers 49 (five in number in the present embodiment) are normally spring biased ln a counterclockwise direction by individual springs I. Depending arms 52 of levers 49 co-operate with the upper arm of a bail lever member 63. Bail 53 is pivotally supported at 54 by bracket 41. The lower arm of bail 53 co-operates with the head of a screw 55 adjustably carried at one end of a bail operating lever 56 pivoted at 51, to the base 44. The opposite end of lever 56 carries a cam follower roller 58 which co-operates with a cam 59 fixed to the lower end of the vertically positioned commutator distributor shaft 6I suitably journaled in the base 44.

Each of the levers 49 also carries at the extremity of its arm 62 a contact spring 63 provided with contact points to co-operate with the respective marking and spacing contacts I8 insulatably mounted in bracket 41. Projecting rightwardly from each of the depending arms 52 (as viewed in Fig. 2) is an arm 64 which is provided near its outer extremity with an upstanding portion 65, and carried on portion 65 is a tape sensing pin 66. The pins 66, as is wellknownl feel the lower side of the tape 61 for perforations therein, and if a perforation is found, the pin 66 passes through the perforation and the lever 49 assumes the counterclockwise position shown in Fig. 2. On the other hand, if apperforation is not found, the pin 66 bears against the lower side of the tape 61 and the lever 49 assumes its clockwise position. The springs 63 carrying the contact points assume corresponding positions with relation to the marking and spacing contacts I8.

As is also known, the tape 61 is provided with tape feed holes which co-operate with tape feed pins 68 of a tape feed roller or sprocket xed to a shaft 69 to which is also secured a tape feed ratchet 1| which co-operates with a tape feed pawl 12, which is carried at the extremity of a lever similar to levers 49 and are controlled by bail 53. This practice being well-known, the structure therefor is not indicated in Fig, 2.

Co-operating with the outer extremities of arms 64 of levers 49 is a corresponding series of levers 13 pivotally carried at 14 by bracket 41. Levers 13 are normally biased counterclockwise by individual springs 15. A bail member 16 cooperates with the upper arms of levers 13 .and is pivoted at 11 to the base 44. Bail 16 is also provided with a heel portion 16 which co-operates with the lower or downwardly directed arm of the bail member 63. Bail 16 is normally biased counterclockwise by a spring 19. Thus. when the bail member 63 is operated upon by lever 66 to be rotated in a counterclockwise direction, all of the levers 49 will be rotated clockwise by the action of the upwardly extending portion of the bail 63 with the depending arms 62 of levers 49, In this manner all of the pins 66 are withdrawn from the tape 61 preparatory to sensing a new line' or transverse row of perforations.

As bail 53 is thus rotated counterclockwise, its downwardly projecting arm acts upon the heel 58 ,of bail 16 to rotate it clockwise against the action of its spring 19 about the pivot 11. Ball 16 thus acts upon the upwardly projecting arms of levers 13 to withdraw them from co-operative relation with the ends or extremities of the arms 64 of levers 49. It is observed that clearance is provided between the upper extremities of levers 13 and the ends of arms 64 of levers 49, so that as levers 48 are rotated clockwise by bail 53, the levers 13 will have been withdrawn by bail 16 under the action of ball 53 in sufficient time to escape the ends of said arms 64. Alternatively, clearance can be provided between arms 52 and bail 53, instead of between the upper extremities of levers 13 and the ends of arms 64 of levers 49, in which event, levers 13 will be withdrawn from beneath the ends of arms 64 before bail 53 operates on arms 52 to withdraw pins 66 from the holes in the tape 61. Incidentally, the tape feed pawl operating lever (not shown) is also actuated clockwise by bail 53 so as to lower the pawl 12 sufficiently to engage a succeeding tooth on ratchet 61, so that when bail 53 is again permitted to rotateclockwise due to the pull or tension of springs 5I on levers 49, a corresponding spring on the tape feeding levers acts to raise the pawl 12 to rotate the ratchet 1I, and hence feed sprocket wheel 68, to advance the tape 61 a distance of one transverse row, Counterclockwise rotation of levers 49 under the action of their springs 5I in proper timed relation to the tape feed operation, will bring the pins 66 into co-operative relation with the tape 61, those levers 49 rotating further counterclockwise whose pins 66 have found a perforation in the tape. Those levers 49 whose pins 66 have found a perforation in the tape will be rotated suiiiciently so that the extremity of its arms 64, will clear the upper end of lever 13 associated therewith. On the other hand, those levers 49 whose pins 66 have not encountered a perforation in the tape 61 will not be rotated sufficiently and their arms 64 will not clear the upper end of lever 13. Thus, when the bail 16, under the action of spring 19, is rotated counterclockwise at the proper time in the cycle of operation, levers 13 under the action of their individual springs 15 will also be rotated counterclockwise, those levers 13 being rotated a greater distance whose upper end is free of the extremity of arm 64 of its associated lever 49. The remaining of levers 13 will not be rotated the full counterclockwise distance, but will be blocked by the ends of the arms 64 of their associated levers 49.

'I'he lQwer extremities of the five levers 13 are pivotally articulated to a corresponding series of five code bars 8|, which are slidably supported on rods 82 and 83 suitably mounted in the base 44. Thus, the setting imparted to levers 13 4 gnomes under thecontrol of levers Il is transferred to the code bars Il. Although not shown, a detent could readily be provided to preserve the setting of the code bars Il until reset by levers 13.

There are associated with code bars Il three selector members Il, il and It which are selected in response to the figures or shift code signal, the tabulator code signal. and the letters or unshift code signal. respectively. Accordingly. the code bars Il are so notched or coded that when an augment of notches occurs in response to the iigures" or shift signal, the bar Il will be selected. If an alignment of notches occurs in response to the tabulation signal the bar ti will be selected, as shown in Fig. 2. If an alignment of notches occurs in the code bars Il in response to the letters" or unshift signal. the bar Il will be selected.

Bars I4 and are slidably carried on a sup- ).iol't l1 (Figs. 3 and 7) suitably Positioned Within the base portion 4I.' Bar Il is pivotally connected to `an arm Il p ivotally mounted on a pivot shaft l! which is suitably journaled in the base portion Il. Bars Il, I5 and It are nonnally urged leftwardly (as viewed in Fig. 3) by individual springs Il. Individual springs $2 serve to urge bars Il, I5 and Il upwardly into selective relation with the code bars li. A lever Il is rockably carried on pivot shaft I9. and its leftwardly extending arm terminates in a bail portion 84 which acts to withdraw bars Il, Il, Il

from selective engagement with code bars Il to,

permit a resetting of said code bars'. Lever Il also carries at the extremity of its rlghtwardly extending arm a follower roller l5 which cooperates with a bail operating cam It fixed to a shaft 91 suitably mounted in the base portion is observed thatl gear ||l is constantly rotating and. accordingly, through'gears I|2, ill and ill, xed to shafts lll and ||l.constant rotation is imparted to the screw III.

When the screw follower pin Ill is engaged with the thread onthe screw ill, lever ill is constantly urged toward the right thereby (as viewed in Fig. 5) against the tension of a spring lil to hold the contact 2l olosed. As previously mentioned, contact 2l is connected in the circuit of the magnet 22. Therefore. so long as contact 2l remains closed. the brush arm 2| of the commutator distributor Il is constantly rotating due to the f act that the circuit for the stop magnet 22 is closed. thereby energizing said stop magnet, thus attracting the armature 23 againstthe action of its retractile spring |2| (Fig. 4). Armature 2l being held in its attracted position against the stop |22 its arm|2l is held or maintained out of the path of stop lug |24 integral with stop disciilxedtotheshaftli. f

Under certain operating conditions to be presently described, bar Il, when selected. is actuated by bail lli rightwardly to impart clockwise rotau. Rotation is imparted to Shaft' 1 through l the instrumentality of agear Il (Fig. 4) fixed thereto, which gear is meshed with a gear Il hxed to the shaft 6|. Also fixed to shaft I1 is a cam Iii which cooperates with 'a cam follower roller |02 carried at the extremity of one arm A oi' an operating bail lever Il! pivoted at Ill. Integral with lever |l3 is a bail portion Il! which co-operates with V-shaped shoulders Ill (Figs. 3 and 7) on the bars Il, l5, and It. When any of the bars I4, l5 or 2l is selected, shoulder Ill is presented into the path of bail IIS, which. when the lever Il! is rocked counterclockwise by .the cam IUI the selected one of bars Il, l5 and Il is actuated rightwardly (as viewed in Fig. 3) against the action of its individual spring Il. The V-shaped conformation of shoulder ill and the corresponding conformation of the co-operating edge of bail |05 affords an interlock be tween bail |05 and the selected bar Il, li or Il.' during the cycle of operation of bail IIS.

Lever Il is part of a timing device controlled by the bar 85. Having reference to Figs. 3 and 5,

the lever 88 has pivotally connected thereto a A screw follower lever itl. At the extremity of lever |01 there is provided a screw follower pin lill adapted to engage the thread of the screw or worm IIS. Screw il! is ilxed to a shaft to which is also xed a gear 2 (Fig. 4) which is adapted to mesh with a gear ||2 fixed to an auxiliary shaft lil disposed vertically and parallel to shaft 6|. It is understood that shafts |I| and ill are appropriately journaled in the base poltion M. Fixed to the upper end of vertical shaft ||4 is a gear Iii which meshes with a 4gear lit frictionally connected to shaft il. Gear lli meshes with a worm or pinion H1 fixed to the armature shaft ||8 of the motor 4I. It

tion to lever `Il (as viewed in Pig. .3), which movement acts to withdraw the screw follower pin ill from the thread of the screw i". whereupon spring Il! acts upon lever lll to swing it in a counterclockwise direction, as viewed in Fig. 5, against a suitable stop (not shown) but which is positioned so as to align the pin ill with the opposite end of the thread with which it is shown engaged in Fig. 5. Contact 2l is thereupon permitted to open, the effect of which is to cause the de-energization of magnet 22, thus permitting the retractile spring |2| to rock the armature lever |23 counterclockwise to bring the arm |23 thereof into the path of stop lug |24 of stop disc |25. When this occurs, shaft 0| and all elements fixed thereto cease to rotate due to the friction clutch |25 between gear ||I and shaft Il. Thus, shaftll iscausedtobestoppcdwiththebrush arm 2| engaging the stop segment of the distributor Il.

As previously mentioned. the selector bar II is effective only under certain operating conditions; namely, that condition established in response to an upper case character signal assigned to the tabulation function. To assure that the bar I5 is operated only in rponse to the upper case character signal, figures" and "letters" shift bars Il and Il are provided. As is well known in but also a characterin the lower case, and to distinguish between these two characters, said character code signals are precededV by a "iigures" shift code signal or a "letters unshift code signal.

Since in the present embodiment the tabulator barliiseifectiveonlyinresponsetoacodesignal in the upper case, means is provided to distinguish between upper and lower case character signals. To achieve this result, bars Il and Il are provided which co-operate with a member |21, Figs. 3, 6 and 7. As previously described, bar Il is pivoted to lever- Il. Bars Il and II are pivoted to individual brackets l1. As viewed inFig.6,member |21iscarriedonashaft |28 which is suitably mounted in the base M. Member |21 is adapted to be clamped to a portion I2! of base M by means of a spring washer |3| (Fig. 6) in a manner to hold member |21 into any position to which it has been rocked. Member |21 iis-provided with a depending portion |32 terminating in a laterally disposed stud portion |38`adapted to engage a slot |34 (Fig. 7) in bar 88. As viewed in Fig. 'l member 21 is also provided with a leftwardly directed portion |35 of arcuate conformation. As viewed in Fig. 6, the portion |38 is stepped so that the part confronting bar 85 is lower`than that portion confrontin g bar 84. Bar 84 is provided with a hump or cam portion |38 which co-operates, as will presently appear, with portion |35 of member |21.

Member |21 is operated by bars 84 and 88 to permit or prevent the selective operation of bar 85 in the following manner. In Figs. 3 and 7,. it is understood that the bars 84, 85 and 88 are shown in their leftward position, whereat they are held by their individual springs 8|.l Now, when it is desired to suspend transmission during tabulation, the figures or shift signal precedes the tabulator signal, in which event the tape sensing levers 48 will be set in accordance with the figures or shift signal, which setting through the instrumentality of levers 13 will be transferred to code bars 8|, thus producing an alignment oi notches above the bar 84, which, when permitted by bail 84 to rise, will rise into said alignment of notches to bring its shoulder |08 into the path of bail |05 which, when operated by cam |0|, will urge bar 84 rightwardly against the tension of its spring 8|, thus causing cam portion |38 to act upon portion |35 to rock the lmember |21 in a clockwise direction, as viewed in Fig. '1, thus bringing the pin |33 to the left end of the slot |34 in bar 88 and providing a clearance between bar 85 and member sufllcient to permit bar 85 to be selected subsequently by the bars 8| in response to the tabulator code signal. Then, when the tape 81 has been stepped one step, the levers 48 are operated to sense the new transverse row of perforations just presented thereto to control through the levers 13 the setting of the code bars 8|, which will produce a new alignment of notches above the bar 85, so that when the bar 85 is permitted to rise by the bail 84, it will rise into the notches thereabove, this selection being permitted because of the prior raising of the portion |35 (Figs. 8 and '7) sumciently to permit this selection. Then, when bail |05 is operated, it co-operates with shoulder |08 on the selected bar 85 to urge the bar 85 rightwardly to release, through lever 88, follower pin |08 from the threads of the screw |08, thus permitting contact 25 to open, as previously described, to cause the de-energization of stop magnet 22 and the stoppage of rotation of shaft 8| y Upon the release of follower pin |08 from the threads of screw |08, spring ||8, as previously described, acts to rotate lever |01 to its extreme left-hand position, as viewed in Fig 5. Follower pin |08 will again engage the threads of screw |08, which rotates continuously and as it rotates follower pin |08 will move from. left to right, as viewed in Fig. 5. When it reaches its extreme right-hand position or the position shown in Fig. 5, contacts 25 will be closed and an energizing circuit for stop magnet 22 will be completed. The armature 23 will be attracted free of the brush arm 2| which thereupon will rotate by power communicated thereto from motor 48 through the friction clutch. As brush arm 2| rotates, transmission to the line conductor will be resumed and will continue until contacts 25 are against opened through the operation of the mechanism previously described. Particularly significant with regard to the arrestment of the movable carriage requires to move from one stop position to the next possible stop position, which,

--of course, will vary in accordance with the tabular matter being composed.

When it is desired to prevent the selection of bar 85, even though there is an alignment of notches in the code` bars 8| to permit its selection, the letters" or unshift code signal is employed to cause, through levers 48 and 13, the setting of the code bars 8| to produce an alignment of notches above the bar 88, which, when permitted by bail 84, rises into the4 notches to bring the shoulder |08 thereon into the path of bail |05, which, when operated, causes bar 88 to be actuated rightwardly. It will be remembered that since pin |33 (Fig. 7) is at this time at the left end of slot |34, member |21 willbe actuated in a counterclockwise direction, thus lowering portion |35 substantially into contact with bar 85. Since the clamping effect of spring washer |3| is greater than the tension of spring 82, member |21 will remain in its counterclockwise position (as shown in Fig. 7) until again actuated in an opposite direction by the cam portion |38 of bar 84. The purpose of blocking bar after letters code combination, but permitting its selection after figures code combination, is to effect the printing of a character having the same code combination as the tabulator code combination (which is characteristic of the Baudot code) without interruption of transmission in the letters condition, and operation of the tabulator function, with interruption of transmission in the figures condition.

Modification In Fig. 8 is shown a modified arrangement for controlling the blocking of the bar 85, in which the pivoted member |4| is substituted for the member |21 of the principal form of the invention. The member |4| is pivotally supported at |42 to the base 44 at a point substantially above bar 85. At each end, the member |4| is pivotally articulated to bars 84 and 88, through the instrumentality of pivot studs or pins |43 and |44 integral with bars 84 and 88, respectively. Member 4| is also provided with a projecting portion or arm |45 having a laterally disposed end |48 adapted to overlie the bar 85.

Like member |21, member'l4l in Fig. 8 is operated by bars 84 and 88 to permit or prevent the selective operation of' bar 85 in the following manner. In Fig.`8 it is understood that the bars 84, 85, and 88 are shown in their leftward position, whereat they are held by their individual springs 8|. Now, when it is desired to suspend transmission during tabulation, the figures or shift signal precedes the tabulator signal, and a setting will occur in code bars 8| to effect the selection of bar 84, which, when permitted by bail 84 to rise, will bring its shoulder |08 -into the path of bail |05 which, when operated by cam |0|, will urge bar 84 rightwardly against the tension of its spring 8|, thus causing through pin |43, the rotation of' member |4| in a clockwise d1rection about its pivot |42 to swing lateral end 48 out of the path of bar 85 to perm-it bar 85 to be selected subsequently by the code bars 8| in response to the tabulator code signal. Then, when bar 8,5 is selected, it will rise under the control of bail 84 into the aligned notches thereabove in code bars 8|, this selection being permitted because of the prior swinging of end |48 away therefrom to permit this selection. Thus. when bail I Ii is operated it co-operates with shoulder ill on the selected bar Il to urge the bar Il rightwardly to release, through lever ll. the follower pin Ill from the threads of the screw Ill, thus permitting contact 2l to open, as previously described, to cause the deenergisation of stop magnet 22 and the stoppage of rotation of shaft Ii.

When it is desired to prevent the selection of bar Il, the letters or unshift code signal is employed to cause the setting of the code bars Il to produce an alignment of notches above the bar Il, which, when permitted by bail u rises into the notches to bring the shoulder I thereon into the path of bail ill, which, when operated, causes bar Il to be actuated rightwardly. It will be remembered that since the pin i is at this time at the right end of its respective slot in member Ill, member Hl will be rotated in a counterclockwise direction about pivot |42, thus swinging end i into a blocking position directly above bar l5. Incidentally, if the springs Il for bars Il and I8 are dispensed with, the slots in member III associated with pins I and I can be omitted. In this event. either of the bars Il or l! will be held in their operated positions, under the control of a spring washer at pivot |42, until returned by the operation of the other bar. in well-known manner.

While the present invention has been explained and illustrated in contemplation of a specific embodiment, it should be understood that numerous modiilcations and variations may be made without departing from the spirit or scope thereof. It is, therefore, intended not to be limited to any -of the illustrative details of the accompanying drawings, nor to the specific language employed in the foregoing speclncation, but to be permitted instead a latitude of interpretation as indicated by the hereunto appended claims.

What is claimed is:

1. In combination, a recorder responsive to code signals, a transmitting apparatus comprising a tape sensing means, a distributor having a definite rest position, periodically operated means in said recorder responsive to a characteristic code signal, and timing means controlled by said tape sensing means to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

2. In combination, a recorder responsive to code signals, a transmitting apparatus comprising a tape sensing means, a distributor having a definite rest position, periodically operated means in said recorder responsive to a characteristic code signal, and screw and follower timing means controlled by said tape sensing means to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

3. In combination, a recorder responsive to code signals, a transmitting apparatus comprising a tape sensing means, a distributor having a definite rest position, permutation code mechanism controlled by said sensing means, periodically operated means in said recorder responsive to a -characteristic code signal, and timing means controlled by said permutation code mechanism in response to said lsensing means to control the arrest of said distributor in its rest position for the duration of operation f said periodically operated means.

:pensas 4. In combination, a recorder responsive to code signals, a transmitting apparatm comprisingatapesensingmeanaadistributorhavinga definite rest position, permutation code mechanism controlled by said sensing means, means to transfer the selective condition of said sensing means to said mechanism, periodically operatedmeansinsaidrecorderresponsivetoa characteristiccodesign'aLand atimingmeans controlled by seid mechanism in accordance with a certain transferred selective condition to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

6. In combination, a recorder responsive to code signals, a transmitting apparatus comprisingatapesensingmeanaadistributorhaving a definite rest position, permutation code mechanismcontrolledbyssidsensingmeans,meansto transfer the selective condition of said sensing means to said mechanism, periodically operated means in said recorder responsive to a characteristic code signal, a timing device, and means controlled by said permutation code mechanism in accordance with a certain transferred selective condition to govern the operation of said timing device to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

6. In combination, a recorder responsive to code signals, a transmitting apparatus comprising a tape sensing means, a distributor having s definite rest position, permutation code mecha. nism controlled by said sensing means, periodically operated means in said recorder responsive to a characteristic code signal, a timing device, and means controlled by said permutation code mechanism and effective under certain selective conditions to govern the operation of said timing device to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

'7. In combination, a recorder responsive to code signals. a transmitting apparatus compris- -ingatapesensingmeans.adistributorhavinga definite rest position, permutation code mechanism controlled by said sensing means, periodically operated means in said recorder responsive to a characteristic code signal. a timing device, a member for controlling the effectiveness of said device, and controlling the operability of said member. a pair of other members and an element operated by said pair of members whereby the effectiveness of said timing device to control the arrest of said distributor in its rest position for the duration of operation of said Periodically operated means is determined.

8. In a transmitting apparatus, elements for sensing the indicia in a tape. a distributor having a definite rest period, and timing means controlled by said tape sensing elements to control the arrest of said distributor in its rest position for a predetermined period.

9. In a transmitting apparatus. a tape sensing means, a distributor having a definite rest period. and screw and follower timing means controlled by said tape sensing means to control the arrest oi seid distributor in its rest position for s rredetermined period.

l0. In a transmitting apparatus. a tape sensing means, a distributor having a definite rest position, permutation code mechanism controlled by said sensing means, and timing means controlled by said permutation code mechanism in response to said sensing means to control the arrest of said distributor in its rest position for a predetermined period.

11. In a transmitting apparatus, a tape sensing means, a distributor having a denite rest position, permutation code mechanism controlled by said sensing means, means to transfer the selective condition of said sensing means to said mechanism, and a timing means controlled by said mechanism in accordance with a certain transferred selective condition to control the arrest of said distributor in its rest position for a predetermined period.

12. In a transmitting apparatus, a tape sensing means, a distributor having a definite rest position, permutation code mechanism controlled by said sensing means, means to transfer the selective condition of said sensing means to said mechanism, a timing device, and means controlled by said permutation code mechanism in accordance with a certain transferred selective condition to govern the operation of said timing device to control the arrest of said distributor in its rest position for a predetermined period.

13. In a; transmitting apparatus, a tape sensing means, a distributor having a definite rest position, permutation code mechanism controlled by said sensing means, a timing device, a member for controlling the eiectiveness of said device, an element for controlling the operability of said member, and a pair of other members for determining the effectiveness of said element for governing the eiectiveness of said timing device to control the arrest of said distributor in its rest position for a predetermined period.

14. In a transmitting apparatus, a tape sensing means, a distributor having .a denite rest position, permutation code mechanism controlled by said sensing means, a timing device, a member for controlling the effectiveness of said device, a pivoted element for controlling the operability of said member, and a pair of other members for pivoting said element for governing the effectiveness of said timing device to control the arrest of said distributor in its rest po'stion for a predetermined period.

15. In combination, a recorder responsive -to code signals, a transmitting apparatus comprising a tape sensing means, a distributor having a definite rest position, permutation code mechanism controlled by said sensing means, periodically operated means in said recorder responsive to a characteristic code signal, a timing device, a member for controlling the effectiveness of said device, a pivoted element for controlling the operability of said member, and a pair of other members for determining the effectiveness of said members for governing the effectiveness of said timing device to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

16. In combination, a. recorder responsive to code signals, a transmitting apparatus comprising a tape sensing means, a distributor having a definite rest position, permutation code mechanism controlled by said sensing means, means to transfer the selective condition of said sensing means to said mechanism, periodically operated means in said recorder responsive to a characteristic code signal, a timing device, and pivoted means controlled by said permutation code mechanism in accordance with certain transferred selective conditions t0 govern the eiectiveness .of said timing device to control the arrest of said distributor in its rest position for the duration of operation of said periodically operated means.

17. In a telegraph transmitter, elements for sensing the indicia in a tape, a distributor having a deiinite rest period, means for timing the period said distributor is in its rest position, and means controlled by the tape sensing elements for controlling said timing means to eiect the arrestment of said distributor and to maintain it in its rest position for a predetermined period vof time.

RAYMOND E. ZEN'NER.. 

